Wood-working machine



(No Model.)

S. W. PEREGRINE.

WOODl WORKUQGI MACHINE. No. 416,492. Patented Dee. 3, 1889.

N. PETERS. Fmlo-Liumgmphr, washing, D. C.

' UNITED STATE-s PATENT OFFICE.

SEYMOUR WV. PERGRINE, OF GRAND RAPIDS, MICHIGAN.

WOOD-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 416,492, dated December 3, 1889.

' Application led May 31, 1889. Serial No. 312,714. (No model.)

To @ZZ whom tnmyconce-rn.'

Be it known that I, SEYMOUR W. PEREGRINE, of Grand Rapids, in the county of Kent and State of Michigan, have invented a new and useful Improvement in Vood-VVorking Machines; and I do hereby declare that the following is a full, clear, and exact description of the same.

In the manufacture of school-seats in which slats are used recesses are formed on the rear side of the slats to receive lugs on the stand' ard, by which th ey are supported and held in place. Each slat has a recesspreferably dovetailed to correspond with the lug, and these several recesses open into each other, thus forming a continuous groove or recess extend-V in form and supported by legs B, and may be of channel-iron, as in Fig. 2. Within the frame is a movable table C, which receives the work to be operated upon, and, as in the presentcase, rests c maybe used on the table corresponding in shape to the seat or back for supporting the same iirmly.

Above the table at each end are clampingplates D D', extending from side to side of the.

4 upon bell-crank levers E, pivoted to the frame,

the ends of said levers engaging adjustable inclines on the under face of the table. The lever-arms a are connected to a treadle G by rods l 2, and the treadle is held normally up by a pulley-spring I, and when it is in this position the levers are as shown in dotted lines and the table is in -its lowest position, ready upper ends of the bell-crank levers and the pins 3 3, resting on the horizontal arms a. The movement of the levers is limited by projections By depressing the treadle the table is forced up and the work clamped. A pivoted stop-arm N holds the treadle down.

The plates D D', besides forming a portion of the clamping and holding means, also act to control and guide the cutting-tool, for which purpose they have openings extending longitudinally, the contour of which corresponds to the shape of the recess to be cut, the shape shown being a series of connected dovetails. The cutting-tool passes through this plate and removes the material directly beneath the opening, its lateral movement of course being controlled by the edges of the plate about the opening.

The tool 4 is on a shaft 5, journaled in the head 6, at the lower end of which is a ball '7,`

adapted to -a socket in the block D?. The block has iianges embracing the edges about the openin gin the plate, so that the said block may slide along said plate to bring the cutter into action'at different points t0 form the recess. The block is formed as in Fig. 3 to allow lateral movement. The front. end of the plate is open to allow the admission and withdrawal of the block and cutter at will. The ball-andesocket joint allows the shaft to remain vertical without regard to the inclination of the work and the block D2. The shaft is driven by lbelts 8 9 through pulleys l0 1l l2 on a jointed frame composed of bars y s, the latter of which is journaled on ashaft w, which is rotated by a belt 14 and pulley l5. There is a plate D and D at each end of the table, and when the recess has been formed in one end of the seat or back the block D2, with the cutter, is slid out of the plate and the jointed frame is moved, so that it may be inserted in the other plate to cut the recess there.

1. In combination, the supporting-frame, a vertically-movable table for holding the work, a clamping-plate extending over said table and secured permanently to the supporting frame, said rigid clamp-plate having an opening for the cutting-tool and constituting the pattern, substantially as described.

the clamp-plate secured theretohaving an i opening to guide the cutter, the verticallymovable table, and the removable plates F, secured to the underside of the clamp-plates, substantially as described.

5. In combination, the cutters, the clamping-plate, the movable table, the frame, the levers for supporting and operatin g said table, the treadle, the spring, and the holding means, substantially as described.

6. In combination, the table, the guide-plate, the sliding block on said plate, the cutter-head having the ballbearing, and the shaft and cutter, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribin g Witnesses.

SEYMOUR W. PEREGRINE.

Witnesses:

CHARLES A. RENWICK, CHRIS SIPP. 

